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Monday, November 7, 2011
刷牙前用牙刷沾水坏处可不小
绝大多数人都有这样的刷牙习惯:牙刷挤上牙膏放嘴里刷牙前,都习惯性地将牙刷沾水后再刷牙,其实,这是极不健康的,坏处可不小! 绝大多数人都有这样的刷牙习惯:牙刷挤上牙膏放嘴里刷牙前,都习惯性地将牙刷沾水后再刷 ... 刷牙前用牙刷沾水坏处可不小
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